Joint



June 1939. A. E. BRICKMAN ET AL 2,162,467

JOINT Filed June 13. 1936 5 Sheets-Sheet l 4L4/v -E. BE/(KMA/Vm/ 650/9654. CiLEfiON. v

June 13, 1939.

A. E. BFQICKMAN ET AL JOINT 3 Sheets-Sheet 5 Filed June 13, 1936' [Mei450215".- 444M 5.

5E/CK/ /4N m Patented June-13,1939

UNITED STATE.

s PATENT OFFICE JOINT Alan E. Brickman and George A. Gleason, Worcester,Mass, asslgnors to The American Steeland Wire (hmpany of New Jersey, acorporation ed New Jersey Application June 13, 1936, Serial No. 85,161

2 Claims.

pre-molded felt or paper which is saturated with asphalt. Thesepre-molded bituminous fillers exl truded from the pavement as theconcrete sections expanded, resulting in a bumpy eiiect on passingvehicles. Furthermore, when the pavement contracted spaces were left oneither side of the pre-molded fillers for the entrance of dirt andwater. If water enters the joint, it might later freeze and damage thepavement -while dirt will become packedandresultin the heaving orbuckling of the pavement due to lack of adequatespace for expansion.

It'jis among the objects of the present invention to provide aneflicient expansion and contractionjoint for concrete pavement whichwill also function to transfer the load from one section of concrete toanother. a

The foregoing and other objects will be apparent after referring to thedrawings, in which:

Figure 1 is a fragmentary side elevation of the j device of theinvention.

Figure 2 is a sectional view on the line 11-11 of Figure 1.

Figure 3 is asectional elevation on the line IIIIII of Figure 1.

Figureni is an enlarged fragmentary sectional end view ofthe' deviceafter it has been com- 5 pletely installed. v

Figures 5 and Gare enlarged fragmentary sectional end views of theupperpart of the deviceunder contractive and expansive conditions, re-.spectively. 0 Referring more particularly to the drawings, the numeral 2designates a pair' of side-wall members in the form of metallic plates.Those side-wall members 2 are slightly bowed intermediate their edgesand' outwardly curved at '45 points adjacent thereto, the latter beingshown at 3. The edge portions of the side-wall members 2 which adjointhe outwardly curved portions are reversely curved, as shown at 4, andabut at 5 in parallelism. The abuttedparallel edges 5 of the side-wallmembers 2 are suitably connected, as by riveting or welding.

The outwardly curv'edportions 3, reversely curved portions. l, and,abutted parallel edges 5;

of theside-wall members 2 -are enclosed by sleeve members I in the oftrough-shaped or and short sleeve-sections I! to receive transloaddoweling, which is in the form of relatively large curved strips of asuitable-ductile and rust-proof metal, such as copper. The innerside-walls of these sleeve members I initially contact the outwardlycurved portions 3 of the side-wall members 2 and carry at their edgeshorizontal flanges 8 which-extend into the adjacent concrete sec-t tionsit.

f The intermediate portions of the side-wall members 2 are provided withalined apertures 12 pipes H. These pipes ll extend into the concretesections ill, and are initially coated to prevent corrosion and also toform a concrete bond break to allow the relativemovement of the concretesections. V

The ends of the pipes ll are closed by suitable plugs l5 which arecompressible and perform in a manner similar to voids under thegmovementof the concrete sections Ill. When it is de-' sirable to permit themovement of only one of the concrete sections ill, then only those endsof the pipes M are closed while the other ends are permitted to becomefilled with concrete.

happens that the pavement must have a thickened edge seal at the bottom,

and in order to enable this construction there is provided an extensionfor each of the bottom sleeve members 'I. These extensions, shown at 23,are trough-shaped and of tapering depth, and carry at their edgeshorizontal flanges 24 which extend into the bottom portions of theadjacent concrete sections M. The open edges of each extension 23 arearranged to embrace an end of the bottom sleevemember l and are thusheld in place by any suitable means as, for in stance, the bolt and nutillustrated at.-25. V The ends of the spaces provided bythe assembledside-wall members 2, sleeve members I and extensions 23 are sealed bysuitable gaskets 21 composed of rubber or other resilient material whichare initially held in place by the usual paving s'ideiorms 28. After theconcrete is The gaskets 21 serve the dual purpose of sealing the ends ofthe joint andalso providing a compressible end portion for the jointassembly-to compensate for slight variations in the setting of the forms28. The posts l9 and lugs 20 are removed before the concrete becomeshard, but the retaining bar 2| is left in position. After the concretebecomes hard the retaining bar is removed and latex 29 poured into therecess left thereby.

In Figure 5 of the drawings, we have disclosed the concrete sections Inin expande'd condition and the resultant effect on the device of theinvention. As they contract to their initial positions, the side-wallmembers 2 will remain contracted but the sleeve members I will expandtherewith, as shown inFigure 6, whereby the seal is preserved. Thecharacteristics of the copper sleeve members 'l and latex 29 permit thejoint of the invention to withstand many expansion and contractionreversals.

' In time, the side-wall members 2 will decompose, but the pipes M willremain intact to transmit loads from one concrete section to the other.While we have shown and described one specific embodiment of ourinvention, itwill be understood that we do not wish to be limitedexactly thereto, since various modifications may be made withoutdeparting from the scope of our invention, as defined by the followingclaims.

We claim:

l. A trans-load expansion joint for concrete roads and the likecomprising a pair of individual sheet-like side-wall members, adapted tosubstantially abut the ends of the adjacent sections of tions, theadjacent vertically extending flat end portions of said sheet-likeside-wall members being connected together, ,sleeves for enclosing theupper and lower edges of said side-wall members including the reverselycurved and vertically extending fiat joined end portions thereof,flanges extending from each of said sleeves into the ends of thesections of the road, and a rigid one-piece dowel memberextendingthrough said side-wall members and into each of the adjacentsections of the road to transfer loads from one section to the other andprevent relative vertical movement thereof.

2. A trans-load expansion joint for concrete roads and the likecomprising a pair of individual sheet-like side-wall members, adapted tosubstantially abut the ends oi the adjacent sections of the road, theupper and lower edges of said inroad to transfer loads from one sectionto the ber relative to the sections during expansion and I contractionof the road.

' ALAN E. BRICKMAN.

GEORGE A. GIEASON.

